summaryrefslogtreecommitdiff
path: root/src/mesa/drivers/dri/i965/brw_metaops.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mesa/drivers/dri/i965/brw_metaops.c')
-rw-r--r--src/mesa/drivers/dri/i965/brw_metaops.c98
1 files changed, 88 insertions, 10 deletions
diff --git a/src/mesa/drivers/dri/i965/brw_metaops.c b/src/mesa/drivers/dri/i965/brw_metaops.c
index 18ca7b1341..ca8e1d3080 100644
--- a/src/mesa/drivers/dri/i965/brw_metaops.c
+++ b/src/mesa/drivers/dri/i965/brw_metaops.c
@@ -27,6 +27,7 @@
/*
* Authors:
* Keith Whitwell <keith@tungstengraphics.com>
+ * frame buffer texture by Gary Wong <gtw@gnu.org>
*/
@@ -94,22 +95,26 @@ static void init_attribs( struct brw_context *brw )
DUP(brw, gl_fragment_program_state, FragmentProgram);
}
-static void install_attribs( struct brw_context *brw )
+static void install_vertex_attribs( struct brw_context *brw )
{
- INSTALL(brw, Color, _NEW_COLOR);
- INSTALL(brw, Depth, _NEW_DEPTH);
- INSTALL(brw, Fog, _NEW_FOG);
INSTALL(brw, Hint, _NEW_HINT);
INSTALL(brw, Light, _NEW_LIGHT);
INSTALL(brw, Line, _NEW_LINE);
INSTALL(brw, Point, _NEW_POINT);
INSTALL(brw, Polygon, _NEW_POLYGON);
- INSTALL(brw, Scissor, _NEW_SCISSOR);
- INSTALL(brw, Stencil, _NEW_STENCIL);
- INSTALL(brw, Texture, _NEW_TEXTURE);
INSTALL(brw, Transform, _NEW_TRANSFORM);
INSTALL(brw, Viewport, _NEW_VIEWPORT);
INSTALL(brw, VertexProgram, _NEW_PROGRAM);
+}
+
+static void install_fragment_attribs( struct brw_context *brw )
+{
+ INSTALL(brw, Color, _NEW_COLOR);
+ INSTALL(brw, Depth, _NEW_DEPTH);
+ INSTALL(brw, Fog, _NEW_FOG);
+ INSTALL(brw, Scissor, _NEW_SCISSOR);
+ INSTALL(brw, Stencil, _NEW_STENCIL);
+ INSTALL(brw, Texture, _NEW_TEXTURE);
INSTALL(brw, FragmentProgram, _NEW_PROGRAM);
}
@@ -144,6 +149,15 @@ static const char *fp_prog =
"MOV result.color, fragment.color;\n"
"END\n";
+static const char *fp_tex_prog =
+ "!!ARBfp1.0\n"
+ "TEMP a;\n"
+ "ADD a, fragment.position, program.local[0];\n"
+ "MUL a, a, program.local[1];\n"
+ "TEX result.color, a, texture[0], 2D;\n"
+ "MOV result.depth.z, fragment.position;\n"
+ "END\n";
+
/* Derived values of importance:
*
* FragmentProgram->_Current
@@ -170,6 +184,9 @@ static void init_metaops_state( struct brw_context *brw )
brw->metaops.fp = (struct gl_fragment_program *)
ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 1 );
+ brw->metaops.fp_tex = (struct gl_fragment_program *)
+ ctx->Driver.NewProgram(ctx, GL_FRAGMENT_PROGRAM_ARB, 1 );
+
brw->metaops.vp = (struct gl_vertex_program *)
ctx->Driver.NewProgram(ctx, GL_VERTEX_PROGRAM_ARB, 1 );
@@ -177,6 +194,10 @@ static void init_metaops_state( struct brw_context *brw )
fp_prog, strlen(fp_prog),
brw->metaops.fp);
+ _mesa_parse_arb_fragment_program(ctx, GL_FRAGMENT_PROGRAM_ARB,
+ fp_tex_prog, strlen(fp_tex_prog),
+ brw->metaops.fp_tex);
+
_mesa_parse_arb_vertex_program(ctx, GL_VERTEX_PROGRAM_ARB,
vp_prog, strlen(vp_prog),
brw->metaops.vp);
@@ -267,7 +288,56 @@ static void meta_color_mask( struct intel_context *intel, GLboolean state )
static void meta_no_texture( struct intel_context *intel )
{
- /* Nothing to do */
+ struct brw_context *brw = brw_context(&intel->ctx);
+
+ brw->metaops.attribs.FragmentProgram->_Current = brw->metaops.fp;
+
+ brw->metaops.attribs.Texture->CurrentUnit = 0;
+ brw->metaops.attribs.Texture->_EnabledUnits = 0;
+ brw->metaops.attribs.Texture->_EnabledCoordUnits = 0;
+ brw->metaops.attribs.Texture->Unit[ 0 ].Enabled = 0;
+ brw->metaops.attribs.Texture->Unit[ 0 ]._ReallyEnabled = 0;
+
+ brw->state.dirty.mesa |= _NEW_TEXTURE | _NEW_PROGRAM;
+}
+
+static void meta_frame_buffer_texture( struct intel_context *intel,
+ GLint xoff, GLint yoff )
+{
+ struct brw_context *brw = brw_context(&intel->ctx);
+ struct intel_region *region = intel_drawbuf_region( intel );
+
+ INSTALL(brw, FragmentProgram, _NEW_PROGRAM);
+
+ brw->metaops.attribs.FragmentProgram->_Current = brw->metaops.fp_tex;
+ /* This is unfortunate, but seems to be necessary, since later on we
+ will end up calling _mesa_load_state_parameters to lookup the
+ local params (below), and that will want to look in ctx.FragmentProgram
+ instead of brw->attribs.FragmentProgram. */
+ intel->ctx.FragmentProgram.Current = brw->metaops.fp_tex;
+
+ brw->metaops.fp_tex->Base.LocalParams[ 0 ][ 0 ] = xoff;
+ brw->metaops.fp_tex->Base.LocalParams[ 0 ][ 1 ] = yoff;
+ brw->metaops.fp_tex->Base.LocalParams[ 0 ][ 2 ] = 0.0;
+ brw->metaops.fp_tex->Base.LocalParams[ 0 ][ 3 ] = 0.0;
+ brw->metaops.fp_tex->Base.LocalParams[ 1 ][ 0 ] =
+ 1.0 / region->pitch;
+ brw->metaops.fp_tex->Base.LocalParams[ 1 ][ 1 ] =
+ -1.0 / region->height;
+ brw->metaops.fp_tex->Base.LocalParams[ 1 ][ 2 ] = 0.0;
+ brw->metaops.fp_tex->Base.LocalParams[ 1 ][ 3 ] = 1.0;
+
+ brw->metaops.attribs.Texture->CurrentUnit = 0;
+ brw->metaops.attribs.Texture->_EnabledUnits = 1;
+ brw->metaops.attribs.Texture->_EnabledCoordUnits = 1;
+ brw->metaops.attribs.Texture->Unit[ 0 ].Enabled = TEXTURE_2D_BIT;
+ brw->metaops.attribs.Texture->Unit[ 0 ]._ReallyEnabled = TEXTURE_2D_BIT;
+ brw->metaops.attribs.Texture->Unit[ 0 ].Current2D =
+ intel->frame_buffer_texobj;
+ brw->metaops.attribs.Texture->Unit[ 0 ]._Current =
+ intel->frame_buffer_texobj;
+
+ brw->state.dirty.mesa |= _NEW_TEXTURE | _NEW_PROGRAM;
}
@@ -406,7 +476,8 @@ static void meta_draw_quad(struct intel_context *intel,
}
-static void install_meta_state( struct intel_context *intel )
+static void install_meta_state( struct intel_context *intel,
+ GLenum state )
{
GLcontext *ctx = &intel->ctx;
struct brw_context *brw = brw_context(ctx);
@@ -415,10 +486,14 @@ static void install_meta_state( struct intel_context *intel )
init_metaops_state(brw);
}
- install_attribs(brw);
+ install_vertex_attribs(brw);
+ if( state == META_FULL )
+ install_fragment_attribs(brw);
+
meta_no_texture(&brw->intel);
meta_flat_shade(&brw->intel);
brw->metaops.restore_draw_mask = ctx->DrawBuffer->_ColorDrawBufferMask[0];
+ brw->metaops.restore_fp = ctx->FragmentProgram.Current;
/* This works without adjusting refcounts. Fix later?
*/
@@ -437,6 +512,7 @@ static void leave_meta_state( struct intel_context *intel )
restore_attribs(brw);
ctx->DrawBuffer->_ColorDrawBufferMask[0] = brw->metaops.restore_draw_mask;
+ ctx->FragmentProgram.Current = brw->metaops.restore_fp;
brw->state.draw_region = brw->metaops.saved_draw_region;
brw->state.depth_region = brw->metaops.saved_depth_region;
@@ -463,6 +539,7 @@ void brw_init_metaops( struct brw_context *brw )
brw->intel.vtbl.meta_depth_replace = meta_depth_replace;
brw->intel.vtbl.meta_color_mask = meta_color_mask;
brw->intel.vtbl.meta_no_texture = meta_no_texture;
+ brw->intel.vtbl.meta_frame_buffer_texture = meta_frame_buffer_texture;
brw->intel.vtbl.meta_draw_region = meta_draw_region;
brw->intel.vtbl.meta_draw_quad = meta_draw_quad;
@@ -479,5 +556,6 @@ void brw_destroy_metaops( struct brw_context *brw )
ctx->Driver.DeleteBuffer( ctx, brw->metaops.vbo );
/* ctx->Driver.DeleteProgram( ctx, brw->metaops.fp ); */
+/* ctx->Driver.DeleteProgram( ctx, brw->metaops.fp_tex ); */
/* ctx->Driver.DeleteProgram( ctx, brw->metaops.vp ); */
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-28 20:21:42 +0000